Monday night's L.A. premiere of Summit's upcoming football film Draft Day also resembled a tailgate celebration as sports fans cheered on the stars, who walked a green carpet marked with white lines to resemble a football field.

The pigskin-themed event was held at the Regency Bruin Theater, where a crowd of enthusiastic fans cheered as team players Kevin Costner and Jennifer Garner hit the turf.

“When it’s the Patriots or the Red Sox, I stop everything," she said. "I eat in front of the TV. The world revolves around the game."

Costner, who's no stranger to sports films (Bull Durham, Field of Dreams), said in his house, his kids are the athletes. "You have look out in the hallway before you walk into it, because balls are flying," he said.

The movie, which hits theaters Friday, focuses on the professional and personal life of Costner's Cleveland Browns GM on the first day of the NFL draft, as he tries to trade for the No. 1 pick. Garner plays his girlfriend, raving of her co-star, "Kevin is a dreamboat."

Director Ivan Reitman also praised Costner, saying, “He’s a leader. He’s like Gary Cooper. He’s the kind of guy that men want to follow, and trust."

On set, actor Josh Pence (who plays a hopeful athlete waiting to get drafted in the film) threw the football around with Costner. “It was a very surreal moment for me,” he said, “At the time, I was like, ‘I don’t even know if he knows who I am.'”

A screening immediately followed the green carpet, where the audience cheered throughout what seemed like the movie’s entirety. When the film ended, there was a roar of applause, and even a “Cost-ner, Cost-ner” chant that mirrored the roar of the crowd at a football stadium.